Yes, of course, they need food and water more than anything.
Winter watering is a tricky issue. Over the years, I've tried all sorts of setups to address freezing and hauling water out to replace it and the very real danger of water spilling onto feet and causing freezing of tissue.
One of the most recent ways I've solved the water spillage issue is to use small black rubber dog bowls nestled in elevated stands, built them myself but you can buy them, and those go under the horizontal nipples on the large insulated five gallon Igloos. I empty the bowls at night so I don't have to remove solid ice in the morning. I carry a gallon plastic jug of hot water out in the morning and fill the rubber bowls so they have water in case the nipples have frozen, which they do in spite of the heating pads I have draped over them.
There is no danger of spillage and while I may need to replace the water in the rubber bowls mid-day if they freeze, it's not difficult.
Everyone seems to be anticipating the problems that can arise with this arctic forecast. I hope we all survive it. Yeah, I can hear you guys in Alaska, North Dakota, and Minnesota laughing at us.